Make sure that at least one of the following applications is installed.
- EOS Utility
- EOS Viewer Utility
- File Viewer Utility
- CameraWindow DSLR
If any of the above applications are not installed, prepare one of the following installation CD-ROMs.
- EOS DIGITAL Solution Disk v1 to v17.x
- DIGITAL CAMERA Solution Disk v2
1. Download eu240x.dmg from the download page.
2. Double-click Update Installer in the EU240X folder.
Follow the on-screen instructions to complete the installation.

Make sure that at least one of the following applications is installed.
- EOS Utility
- EOS Viewer Utility
- File Viewer Utility
- CameraWindow DSLR
If any of the above applications are not installed, prepare one of the following installation CD-ROMs.
- EOS DIGITAL Solution Disk v1 to v17.x
- DIGITAL CAMERA Solution Disk v2
1. Download eu240x.dmg from the download page.
2. Double-click Update Installer in the EU240X folder.
Follow the on-screen instructions to complete the installation.

EOS Utility is an application that brings together all of the functions required to communicate with the camera. Functions for downloading and displaying images, remote shooting, and camera control of each setting when an EOS DIGITAL camera is connected to a computer have been integrated.
EOS Utility 2.4 Updater for Mac OS X is software that will install EOS Utility 2.4 on your computer or update a previously installed version of EOS Utility to EOS Utility 2.4.
When using Mac OS 10.5, there are limitations with EOS DIGITAL. For details, please refer to "Caution" at the middle of this page.

History

1. Changes with EOS Utility 2.4
1-1. Supports Mac OS X v10.5 (Leopard)
1-2. The function to select multiple images together has been added
A series of multiple images can be checked together in the viewer window when downloading images. If a user clicks the first image for download and then, clicks the last image while holding down the Shift key, the check boxes for those images will be displayed.
(Supported cameras: EOS Kiss X2/EOS DIGITAL REBEL XSi/EOS DIGITAL 450D, EOS-1Ds Mark III, EOS 40D, EOS-1D Mark III)
2. Changes with EOS Utility 2.3
2-1. Supports EOS Kiss X2/EOS DIGITAL REBEL XSi/EOS DIGITAL 450D
2-2. Fixed a Remote Shooting problem
The software fixes a problem in which the images are not transferred to the PC in the Remote Live View function of EOS Utility when the Remote Live View window is displayed and then closed, and that EOS Utility does not respond afterwards even when releasing the shutter on the camera.
(Supported cameras: EOS-1Ds Mark III, EOS 40D, EOS-1D Mark III)
2-3. Improvements to the Remove Live View window
When double-clicking the Remove Live View window, it will switch to the Zoom View screen. When double-clicking the Zoom View screen, it will switch to the Remote Live View window.
(Supported Cameras: EOS Kiss X2/EOS DIGITAL REBEL XSi/EOS DIGITAL 450D, EOS-1Ds Mark III, EOS 40D, EOS-1D Mark III)
2-4. Additional functions for the Remove Live View window
The software adds a Maintain Zoom View check box to the Zoom View screen. By clicking this check box (On), even if remote shooting is performed or the magnification of the camera is changed while the Zoom View screen is displayed, the Remote Live View window is not displayed on the previous screen, and the Zoom View screen is displayed on the previous screen instead. (The setting for the check box is off by default)
(Supported Cameras: EOS Kiss X2/EOS DIGITAL REBEL XSi/EOS DIGITAL 450D, EOS-1Ds Mark III, EOS 40D, EOS-1D Mark III)

1. It is linked with DIGITAL Photo Professional, ZoomBrowser EX, ImageBrowser, Picture Style Editor, but the software has to be the latest version.
The updater for EOS Utility can be downloaded separately.
- Digital Photo Professional (3.4 or later)
- ZoomBrowser EX (6.1.1a or later)
- ImagerBrowser (6.1.1a or later)
- Picture Style Editor (1.3 or later)
2. We have found the following problems with PowerPC-based Macs running Mac OS 10.4.7.
2-1. Connections cannot be made with EOS D30, D60, 10D, 20D, 20Da, EOS Kiss DIGITAL/300D DIGITAL/DIGITAL REBEL.
2-2. Connections cannot be made with EOS Kiss DIGITAL N/350D DIGITAL/DIGITAL REBEL XT, and 5D when the communication setting is PC connection. (Connections can be made when the communication setting is changed to Print/PTP. However, it is not possible to take remote shots because the communication setting has to be PC connection.)
Please update the OS version to Mac OS X 10.4.8 or later.
3. We have found the following problems with Mac OS 10.5.
3-1. When using Mac OS 10.5.0 to 10.5.2
Connections cannot be made with EOS 20D, EOS 20Da, EOS Kiss DIGITAL N/EOS 350D DIGITAL/EOS DIGITAL REBEL XT, and EOS 5D
Please update the OS version to Mac OS 10.5.3 or later.
3-2. When using Mac OS 10.5.0 to 10.5.3
Connections cannot be made with EOS-1D, EOS-1Ds, EOS-1D Mark II, EOS-1Ds Mark II, EOS-1D Mark II N
[Workaround]
When connecting the camera to the computer, perform specific operations on the camera.
(1) Turn the camera's POWER switch to <ON>.
(2) Click the Menu button on the camera to display the menu on the LCD monitor.
(3) EOS Utility starts when the camera is connected to a computer.
(If EOS Utility does not start automatically, start it from the Dock icon.)
(4) Click the Menu button on the camera to turn off the LCD monitor.
(5) On the main screen of EOS Utility click on the menu button of your choice.